Time to delivery based on sonographic assessment prior to forceps and vacuum.
Sana UsmanBirgitte KahrsHelen BartonKjell SalvesenTorbjorn Moe EggeboChristoph C LeesPublished in: Australasian journal of ultrasound in medicine (2019)
In prolonged second stage, delivery with forceps was achieved more quickly than by vacuum when matched for ultrasound determined head station. Irrespective of which was the primary instrument, the failure rate was greater at higher head stations.